Knob attachment



y 1934- R. s. GOLD 1,958,363

KNOB ATTACHMENT Filed Jan. 6, 1933 28 INVENTOR 2055511 5. GOAD ATTORNEY5.

Patented May 8, 1934 KNOB ATTACHMENT Russell S. Gold, New Britain, Conn, assignor to The American Hardware Corporation,

New

Claims.

My invention relates to a securing means for a knob or the like.

It is the principal object of the invention to provide a very simple, eiiective means for securv5 ing a knob to a latch spindle, latch case, or the like, and for making it impossible to remove the knob while the parts are assembled with a door.

Another object is to provide securing means of the character indicated arranged for securing a knob or the like in predetermined definite positions whereby lock parts carried by the knob may always be definitely positioned.

Other objects will either be hereinafter pointed out or will become apparent upon a reading of Y155 the specification taken in connection with the drawing.

Briefly stated, in a preferred form or" th invention a latch case or the like having a spindle or other part is secured to the knob, and a memher, preferably a rose, is associated with the parts so as to prevent access to the securing means while the parts are in assembled relation with a door.

The invention is particularly applicable to out- I side knobs where it is highly desirable to prevent I Fig. l is a top plan View in partial horizontal,

central section of a knob and associated parts assembled with a door, and illustrating features of the invention;

Fig. 2 is a fragmentary view of parts shown in :535 Fig. 1, some parts being shown in different positions;

Fig. 3 is an inside view in elevation on -a reduced scale of a rosette, illustrating features of the invention;

' Fig. 4 is a fragmentary view of a door having an opening for the reception of a latch and the rosette shown inFig. 3;

Fig. 5 is an enlarged, fragmentary, sectional view of the rosette of Fig. 3 assembled with the door of Fig. 4;

Figs. 6 and '7 are fragmentary views of the outside of doors showing certain features of the application of the invention to left and righthand opening doors.

.50 The invention will be described in connection with a latch of the general type disclosed in Mc- Kinney Patent No. 1,865,128, June 28, 1932, but it is to be understood that the principles of the invention are of broader application and may be '55 employed with other types of locks and latches.

In said drawing, 10 indicates generally a door having an opening 11 (in this case cfi circular form), for the reception of a circular casing 12 of a latch of the general type of the McKinney patent mentioned. The latch case 12 has projecting therefrom a suitably guided latch 13, as will be understood. The latch case illustrated has a projecting boss 14 and guided in the boss is a latch spindle 15 to be secured to the knob designated generally 16. In the form shown, the 65. shank 17 of the knob fits over the latch spindle 15 and is secured thereto by suitable means such as a plunger 18, which may be carried in a recess or bore 19 in the spindle 15 and urged outwardly by means of the spring 20. The knob 70. shank has an opening or recess 21 to register with the opening 19 for the reception of the plunger 18, whereby the two parts may be locked together when the plunger is spring pressed outwardly. For a purpose to be later described, duplicate securing means at 180 from each other are provided, such duplicate securing means comprising a second opening 21 so that the knob may be turned through 180 and secured to the spindle in that position.

In order to conceal and prevent access to the securing means between the spindle and knob, I provide a suitable member shown in the form of a rose 22 screw threaded at 23 for engagement with the screw threaded outer surface 24 of the boss 14. The rose has a sleeve 25 to conceal and prevent access to the spring pressed plunger 18 when the parts are in assembled relation with a door, as illustrated in Fig. 1.

The rose and the door, or any part fixed there- 30 to, have interengaging parts for permanently preventing unscrewing of the rose from the boss 14 when the parts are assembled with the door. The door may be provided with one or more supplemental openings or recesses 26-26, and the rose provided with one or more projecting lugs 2'7-27 to interfit with said recesses 26-26 when the parts are assembled with the door. Thus the rose is permanently held against rotation on the lug 14. It will therefore be seen that so long as the parts are assembled with a door, it will be impossible to actuate the plunger 18 to release the knob from the spindle. Generally the latch would be assembled with the door from the outside and held in position by suitable means such as a rose on the inside of the door secured to the latch case.

If it is desired to release the knob from the spindle, the lock case is disassembled from the door, that is, moved to the left, so as to permit the rose 22 to be released from the door and to be unscrewed from the threaded boss 14. When the rose is so unscrewed as indicated in Fig. 2, an instrument such as a nail or wire 28 may be inserted behind the flange of the rose and through an opening 29 in a rear sleeve 30, if such sleeve is provided. The spring pressed plug or plunger 18 may then be forced inwardly so as to free the knob shank 17 and the knob may then be disassembled from the spindle. The assembly of the knob with the spindle is, of course, a simple matter, it being only necessary to depress the plunger 18 and slide the knob into place with the openings 21 registering with the plunger when the latter will spring into place.

The purpose of the duplicate securing means between the knob shank and the spindle, and comprising in this case the duplicate openings 21-21, is to permit the knob to be assembled in either of two positions rotatively 180 from each other. When the knob is provided with a lock sucl? as a cylinder lock 31, the key slot is usually placed in a vertical position and when the knob is applied to the outside of a door, as shown in Fig. 6, the key slot will stand in the position there shown. However, when the same knob is applied to a door opening oppositely to that shown in Fig. 6, the knob is inverted and the duplicate securing means is to permit the knob to be so inverted and still permit the plunger 18 to secure the knob in such inverted position.

No particular lock has been shown nor has any connection from the lock to the latch been shown since locks and their means of connection of same to the latch are well known.

It is to be noted that in case a fixed outside knob is desired, the knob may be connected by the means herein disclosed to a fixed part of the lock case such as the boss 14, as will be understood.

It will thus be seen that I have provided a cheap, exceedingly simple, yet very secure, means for holding a knob or the like to a knob spindle or the like, and when the parts are assembled with a door, it will be impossible to unscrew the rosette tions may be made and various embodiments of the invention may be made by those skilled in the art.

I claim:

1. In a device of the character indicated, a

latch case to be secured to a door and having a spindle, a knob having a shank to interfit with said spindle, said knob and spindle having registering openings, a securing member in said openings to hold said shank and spindle to each other, a rose to normally prevent access to said securing means, said latch case and rose having interfitting parts to hold the same together and releasable upon a relative rotation between said latch case and rose, said rose havingmeans to prevent rotation thereof when the rose and associated parts are assembled with a door.

2. In a device of the character indicated, a latch case, a latch spindle, a knob interfitting with said spindle, means for securing said knob and spindle together, a member screw threaded to said latch case and normally concealing said securing means, said member having means to prevent unscrewing of the same from the latch case when the parts are assembled with a door.

3. In a device of the character indicated, a latch case of substantially circular cross section to be assembled in an opening in a door and having a threaded boss projecting therefrom, a latch spindle, a knob having a shank fitting over said spindle, means for securing said knob and spindle to each other, a rose screw threaded onto said boss and serving to conceal said means for securing said spindle and shank to each other, said rose having projecting means thereon to interfit with a recess in a door to prevent unscrewing of said rose from said boss when the parts are assembled with a door.

4. In a device of the character indicated, a latch case, a latch spindle, a knob having a shank interfitting with said spindle, a spring pressed plunger carried by one of said interfitting parts, the other of said interfitting parts having an opening for the reception of said plunger whereby said spring pressed plunger serves to secure said knob and spindle to each other, a rose to be secured to said latch case and having means affording access to said plunger when said latch case and rose are disassembled from a door, said rose having a part to normally prevent access to said spring pressed plunger, and means for permanently preventing movement of said rose when the same is assembled with a door.

5. In a device of the character indicated, a latch case having a projecting screw threaded boss thereon, a latch spindle, a knob having a shank interfitting with said spindle, a spring pressed plunger carried by said spindle, said knob shank having an opening for the reception of said plunger when spring pressed outwardly, whereby said knob shank and spindle may be held together, a rose to be screw threaded onto said projecting boss and having means affording access to said spring pressed pliuiger when said rose is unscrewed from said boss, said rose serving to prevent access to said spring pressed plunger when said rose is screwed onto said boss, and means to prevent unscrewing of said rose from said boss so long as said rose is assembled with a door.

RUSSELL S. GOLD. 

